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https://github.com/gfx-rs/wgpu.git
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fcac8a9b28
This is a useful shortcut for tests and example code, allowing it to create a noop device without needing to deal with nonexistent fallibility and asynchrony.
70 lines
1.9 KiB
Rust
70 lines
1.9 KiB
Rust
use std::num::NonZero;
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const ARBITRARY_DESC: &wgpu::BufferDescriptor = &wgpu::BufferDescriptor {
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label: None,
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size: 100,
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usage: wgpu::BufferUsages::VERTEX,
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mapped_at_creation: false,
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};
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#[test]
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fn reslice_success() {
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let (device, _queue) = wgpu::Device::noop(&wgpu::DeviceDescriptor::default());
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let buffer = device.create_buffer(ARBITRARY_DESC);
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assert_eq!(buffer.slice(10..90).slice(10..70), buffer.slice(20..80));
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}
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#[test]
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#[should_panic = "slice offset 10 size 80 is out of range for buffer of size 80"]
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fn reslice_out_of_bounds() {
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let (device, _queue) = wgpu::Device::noop(&wgpu::DeviceDescriptor::default());
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let buffer = device.create_buffer(ARBITRARY_DESC);
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buffer.slice(10..90).slice(10..90);
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}
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#[test]
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fn getters() {
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let (device, _queue) = wgpu::Device::noop(&wgpu::DeviceDescriptor::default());
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let buffer = device.create_buffer(ARBITRARY_DESC);
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let slice_with_size = buffer.slice(10..90);
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assert_eq!(
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(
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slice_with_size.buffer(),
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slice_with_size.offset(),
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slice_with_size.size()
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),
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(&buffer, 10, NonZero::new(80).unwrap())
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);
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let slice_without_size = buffer.slice(10..);
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assert_eq!(
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(
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slice_without_size.buffer(),
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slice_without_size.offset(),
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slice_without_size.size()
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),
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(&buffer, 10, NonZero::new(90).unwrap())
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);
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}
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#[test]
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fn into_buffer_binding() {
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let (device, _queue) = wgpu::Device::noop(&wgpu::DeviceDescriptor::default());
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let buffer = device.create_buffer(ARBITRARY_DESC);
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// BindingResource doesn’t implement PartialEq, so use matching
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let wgpu::BindingResource::Buffer(wgpu::BufferBinding {
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buffer: b,
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offset: 50,
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size: Some(size),
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}) = wgpu::BindingResource::from(buffer.slice(50..80))
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else {
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panic!("didn't match")
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};
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assert_eq!(b, &buffer);
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assert_eq!(size, NonZero::new(30).unwrap());
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}
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